Angela BERTUNA

GAS SENSORS BASED ON METAL OXIDES NANOWIRES FOR ENVIRONMENTAL MONITORING

I’m using several methods for the growth of different metal oxides nanostructures. I started to work with tungsten oxide doped with niobium and titanium and to do that I deposited the metal film on alumina 2 · 2 mm2 by RF Magnetron sputtering technique. I used a thermal evaporator furnace to grow nanostructures on the top of the samples. I controlled some parameters like temperature, oxygen and argon concentration, oxidation time and pressure inside the chamber to optimize nanostructures growth. Samples have been investigated by SEM to verify the morphology of the nanostructures. Afterwards samples have been mounted on TO packages with gold wires to fabricate gas sensors and they have been tested to evaluate their sensitivity to different gaseous species in a wide range of temperatures.

Foto_XXIX_Bertuna

Curriculum: Physical Sciences for Engineering

Tutor: Elisabetta COMINI

email: a.bertuna@unibs.it

 

Link to the research group web page

Link to publication list